server端:
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# ftp server端
import socket, os, time
server = socket.socket()
server.bind(("localhost", 8080))
server.listen()
while True:
conn, addr = server.accept()
print("连接到客户端:", addr)
while True:
try: # windows会直接报错,需要捕获异常
data = conn.recv(1024)
if not data:
print("客户端已断开")
break
except Exception as e:
print("客户端已经断开")
break
cmd, filename = data.decode().split() # ex: get name.txt
if os.path.isfile(filename):
f = open(filename, "rb")
# 获取文件的字节大小
size = os.stat(filename).st_size
conn.send(str(size).encode()) # 发送文件大小
conn.recv(1024)
for line in f: # 客户端确认后发送文件内容
conn.send(line)
f.close()
conn.send("not file".encode())
server.close()
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client端:
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import socket
client = socket.socket()
client.connect(("localhost", 8080))
while True:
cmd = input(">>:").strip()
if len(cmd)==0: continue
if cmd.startswith("get"):
client.send(cmd.encode()) # 发送请求
server_response = client.recv(1024)
if server_response.decode().startswith("not"):
print("请输入有效文件名")
continue
client.send(b"ready to recv file") # 发送确认
file_size = int(server_response.decode()) # 获取文件大小
rece_size=0
filename = cmd.split()[1]
f = open(filename + ".new", "wb")
while rece_size < file_size:
if file_size - rece_size > 1024: # 要收不止一次
size = 1024
else: # 最后一次了，剩多少收多少,防止之后发送数据粘包
size = file_size - rece_size
print("last receive:", size)
recv_data = client.recv(size)
rece_size += len(recv_data) # 累加接受数据大小
f.write(recv_data) # 写入文件,即下载
else:
print("文件下载完成")
f.close()
client.close()
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测试案例:
以上就是如何使用python socket模块实现简单的文件下载的详细内容，更多关于python socket文件下载的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/houzheng/p/10292889.html